I lost the key for my sport. So I have it straight wired.
4 colors are Black, Red, Blackred, brown

Red and black red go toether at all times...

black is ground..
what is brown?!?!

My fan has not kicked on yet..........

 

brown is ground on Polaris

 

black is usually your safety switches like ur reverse override and all that, also ur ignition switch, red and red/black are usually hot wires, and brown is ground, and to check and see if ur fan is actually working, you can take the 2 wires off of the coolant temp sensor on the radiator and take a paperclip between the two and the fan should come on, been having fan problems all summer at work, so i'm gettin good at diagnosing problems